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2 years ago

Help me I having a hard time with This one

Mathematics

2 answers:

MrRa [10]2 years ago

8 0

Answer:

Step-by-step explanation:

4 students studied 4 hours or more.

alina1380 [7]2 years ago

7 0

Answer:

Step-by-step explanation:

at least means minimum so how many students studied a minimum of 4 hours?

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Find the sum: (3x2 + 5x − 8) + (5x2 − 13x − 5)

Trava [24]

The given expressions are $3x^{2}+5x-8$ and $5x^{2}-13x-5$

We have to find the sum of the given expressions,

$(3x^{2}+5x-8)+(5x^{2}-13x-5)$

Combining the like terms of both the expressions, we get

$(3x^{2}+5x^{2})+(5x-13x)+(-8-5)$

= $8x^{2}-8x-13$ .

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3 years ago

Calculate the surface area of the figure below.

igor_vitrenko [27]

Answer:

164

Step-by-step explanation:

A= 2(wh+lw+lh)

just plug it in and you'll get your answers for surface area

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3 years ago

What is the sum of the measures, in degrees, of the interior angles of a 16- sided polygon?

IRISSAK [1]

Answer: So the sum of all of the measures of the interior angles of a 16-sided polygon is 2520 degrees.

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2 years ago

The points (2, 3) and (6, 11) lie on a line. What is the slope of this line?

AveGali [126]

Answer:

8/4

Step-by-step explanation:

to do slope is y2 - y1 over x2 - x1, so it would be 11 - 3 for 8, then 6 - 2, leaving 8/4.

3 0

3 years ago

What is 1/5 × -3/2 +4/5 × -2/7 × -1/6 × -2/7

velikii [3]

Answer:

$\frac{-457}{1470}$

Step-by-step explanation:

$\frac{1}{5} \times \frac{-3}{2} + \frac{4}{5} \times \frac{-2}{7} \times \frac{-1}{6} \times \frac{-2}{7}$

$(\frac{1}{5} \times \frac{-3}{2}) + (\frac{4}{5} \times \frac{-2}{7} \times \frac{-1}{6} \times \frac{-2}{7})$

$\frac{-3}{10} +\frac{-16}{1470}$

$=\frac{-457}{1470}$

4 0

3 years ago

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